Apparatus for regulating draft in steamboat and other chimneys



Fig. 2 is a J. B. CAMPBELL, M. D., OF CINCINNATI, OHIO.

'APPARATUS FOB REGULATING DRAFT IN STE'AMBOAT AND OIHER CHIMNEYS.

Specification forming part of Letters Patent No. 62,937, dated March 19,1867.

To all whom it may concern:

Be it known that I, J. B. CAMPBELL, of the city of Cincinnati, in thecounty of Hamilton, in the State of Ohio, have invented a new and usefulMode of Increasing and Regulating the Draft in Chimneys 5 and I do hereby declare that the following is a full and eX-.

act description thereof, reference being had to the accompanyingdrawings.

Figure l shows the horizontal position of the smoke-pipe on the top ofthe steamboat. Letter A, the horizontalvchimneypipe5 letter B, theenlarged end of the smoke-pipe, terminating in a square shape, and abouttwice the capacity of the smoke-pipe at A; letter C is the top of theboat 5 letters E E are two wings or wind-guards; letters vD D are eachhalf-curbs on the end of each wing E E. perspective view. Fig. 3 is atop view. p v

My invention consists in, lirst, the enlarged square end of thesmoke-pipe, as at B, giving a large vacuum and increased draft; second,two swinging wings, E E, hung on iron rod or wire hinges 5 (shown at theperpendicular black line' on the outside of the wing 5) third, twosegments of curbs, anextension of part of the Wings E E, and shown at Dand D, and running each half-way across on the top of the enlarged endof the pipe B, and meeting'together in the middle. Letter F is the apronunder the wings.

Operation of the invention: When there is a head'wind, the wings E Ehang at ease, as

' the'same stern wind-closes the wings E E, the' end of each wingmeeting in the middle and effectually closing the stern end ofthe wings,and turning the wind oli' to each side and leaving a large vacuum, freefrom wind, for

the smoke to escape up through. When there is a. side Wind the wings E Eland curbs D D swing around on their hinges as far as they can go, asshown in Fig. 3, keeping all wind away from the end of the smoke-pipe,and letting the smoke escape out, in direction with the wind, under thecurb and between the two wings, and also up between the wing and curband the two circular black lines near letter B in Fig. 3. When the windis from the other side, the vwin gs and curbs will change as the windchanges, and the whole thing is under complete control. Any mechanicskilled .in working heavy sheet iron can easily construct it.

In applying the improvement to a steamboat or vessel, it may be builtsmooth, low,

and flat on the top, as at Fig. 1, enabling the boat to run faster andsafer in storms,.and tov run under low bridges and tree-tops on smallrivers, and to gain in speed by the' increased draft of the smoke causedby the vacuum in the enlarged end ofthe smoke-pipe at B, and by the wingbeing kept from the end of the pipe by the wind-guardsE E, and by thecurbs D D. The enlarged 'end of the horizontal smoke-pipe increasesdraft by vacuum, and the wings, swinging on hinges as the wind turnsthem, keep off the wind, no matter how it blows, or how often it or theboat may turn.V

And thus the draft is increased and the smoke regulated, and the safetyand speed of the boat greatly increased, and the improvement `Amay bearranged to any kind of a chimney.

I do not claim anything on merely the horizontal position of thesmoke-pipe, as the invention (smoke-regulator and draft-increaser) 'may'be put to a chimney in any positionmodied to suit.

What I'claim is-' l. The enlarged end of the smoke-pipe B,

provided with the wings E E and with the y' curbsD D, constructed andusedk in the manner above described.

, 2. The wings E E,hinged and adapted to the purpose described.

J. E. CAMPBELL.

Witnesses:

J. W. MAsoN, SAML. PEEL.

